Watchman s time-recorder



(No Model.) 2 sheets-sheet 1, C. E. SANFORD. WOEKMANS TIME E'EGOEDEE.

i Patented Aug. 4, 1896.

KNO Model.) 2 sheets-sheen 2.

C. BSANFORD. f

WORKMANS TIME RECORDER. No. 565,037. Panentedv Aug. 4., 1896.

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UNITED STATES :PATENT OFFICE.

CHARLES EDW'ARD SANFORD, OF BROOKLYN, NElV YORK.

WATCHMANS TIME-RECORDER.

SPECIFICATJIKON forming part of Letters Patent No. 565,037', dated August 4, 1896.

Application filed February `1896.l Serial No. 580,707x (No model.)

.To @ZZ whom, it may concern-.-

Be it known that I, CHARLES EDWARDSAN-iv V FORD, of Brooklyn, New York, have invented certain Improvements in Watchmens Clocks, of which the following is a specification.

These improvements relate to the construction of a watchmans clock provided with a time-lock for preventing access to the recording-dial during a period of time determinable by appropriately setting the clock mechanism.

The invention is herein illustrated as applied to a twen ty-four`ho ur watchmans clock, and also as applied to an eight-day watchmans clock.

The accompanying drawings are as follows, VIZI Figure 1 is a face view of a twenty-fourhour watchmans clock with portions of the covers of the case represented as broken away. Fig. 2 is a top view, partly in section, on the plane indicated by the dotted line .fr 50 on Fig. l. Fig. 3 is a side view, partly in section, on the plane indicated by the dotted line {1/ y on Fig. l. Fig. l is a section of a portion of the case,` showing the bayonet-j oint in its unlocked position. Fig. 5 is a section similar to Fig. 4, but showing the bayonet joint in its locking position. Fig. 6 is a face view of an eight-day watchmans clock with portions of the case represented asbroken away, illustrating a modification of the lockcontrolling mechanism. Fig. 7 is a top view, partly in section, on the plane indicated by the dotted line .e .e on Fig. 6. Fig. 8 is a detail showing a part of the pin-carriage of the eight-dayclock mechanism.

Figs. 1, 2, and 3 of the drawings represent a case the body A of which is of cylindrical form and is represented as containing a twenty-four-hour-clock movement. The case is provided with a circumferentially-iianged cover B, which is attached to the body in any convenient way, as, for example, by a bayonet-j oint. The body has inserted through its top the yrock-shaft O, provided upon its outer end with the knob O', and having mounted upon its interiorportion the cam D for operating the puncturing-pin. lVii-hin the cover B is an annular seat B', affording the bearing for the glass disk E, which is held in place by the expanding spiral spring E', sprung into the annular groove E2 in the cover B.

At 'each of two or more places the iiange of `the cover Bis provided with an inwardlyprojecting stud F. At each of the corresponding-.places the edge ofthe body Ais provided with a comparatively wide notch F. At each of the corresponding places the annular plate G, appropriately fastened within vthe body A, is provided with the narrower notch G. The stud F, which constitutes the male member of the bayonet-j oint, is Apassed sidewise through the notches F and G, and

,is then by the turning of the cover B carried under the edge of the annular plate G.

The springdatch H, which, when appropriately adjusted, occupies the path of the stud F immediately below the notch G in the annular plate G,yields when thestud F is pressed inward, and after the stud has been moved under the adjoining part of the plate G springs back in the rear of the stud, and thereafter acts as a chock, which prevents the return movement of the stud, and hence prevents the removal of the cover. The latch H is at the free end of a flexible arm H', affixed to the manually reciprocably sliding tumbler H2. The tumbler' H2 is constantly under the influence of the spring H3, tending to pull back the tumbler radially, and thus carry the latch inward out of the path of the stud F.

To retain the latch in its outward or opera` tive position, the tumbler H2 is provided with a standard H4, which, when the tumbler is pushed outward, engages a notch I in the sear l', which is constantly under the influence of the Sear-spring I2, and during such engagement acts as a hook, which holds the tumbler H2 against the iniiuence of its spring, and thus keeps the latch in operative position.

The hub 'of the sear I' is provided with a radius-arm I3, projecting across the path of rotation of the tripper J, which is so operated by the clock-movement as to make one revolution every twenty-four hours and which at a prearranged hour, by its collision with the 'radius-arm I3, causes the sear I to be tripped TOO ing the path of the stud F and permitting the cover B to be appropriately turned and removed from the case.

The eight-day clock is also provided with a tripper J, making one revolution every twenty-four hours, which acts to trip the sear I', through a series of intermediate connections, whenever the continuity of said connections is established by the step-by-step movements of one of the members of the said series of connections, one of which movements is induced daily by the rotation of the tripper. The clock-movement and the parts may be so adjusted that the continuity of the said intermediate connections will be established at the end of any number of days, not exceeding eight, after the clock is wound up and the latch thrown outward into operative position. The step-by-step moving memberin said train of intermediate connections is an arm K, which is journaled at one end upon the radially-moving carriage K', in which the puncturing-pin K2 is arranged.

lVhen the parts are adjusted with reference to having the ease unlocked at the end of eight days, the arm and the puncturing-pin are arranged as shown in Fig. 6, the puncturing-pin occupying such a position as to enable it when operated to pierce the outer circle of divisions in the registering-disk K3.

A contracting spiral spring K4 tends to pull the arm K in such direction as to carry the puncturing-pin toward the axis of the clockmovement. This tendency is resisted by the detent K5, which, as will be seen, engages the end tooth l of the series of eight teeth formed in the edge of the arm K.

At the end of twenty-four hours, or such less number of hours as may be arranged for byIappropriate adjustment of the clock mechanism, the tripper J strikes against the adjacent end j of the lever j, overcoming the influence of the contracting-spring ,i2 and carrying the pawl 3'3 into collision with the apex of the tooth 2, and thereby rocks the arm K clear of the vdetent K5, so that under the iniiuence of the contracting-spring K4 the arm K is pulled backward.

The parts are so timed that the lever J is released and rocked by its springj2 in the reverse direction, and the pawlj3 hence withdrawn from engagement with the tooth2 in time to allow the tooth 2 to catch against the detent K5. By this movement of the arm K the puncturing-pin is brought into position to make punctures in the next circle of divisions in the registering-disk. After an interval of twenty-four hours the lever 77" is again actuated by the tripper J and the arm K again rocked clear of the detent K5 and pern mitted to be pulled backward until the tooth 3 catches upon the detent K5. As this operation is repeated from day to day a pin K6, affixed to the arm K, is carried step by step toward the radius-arm t3, which in the eightday clock is a prolongation of the scare' therein employed. After a prearranged number of such step-by-step movements, or, in other words, after a predetermined number of days, the pin K( is carried into close proximity with the radius-arm i3, so that concurrently with the actuation of the leverj by the tripper J at the prearranged hour ot' the predetermined day the pin K6 trips the scar t, thus releasing the tumbler' 112 to the action of its retracting-spring I-lfand causing' the tumbler H2 to be pulled inward and the latch Il to be withdrawn from its operative position.

That is claimed as the invention is- 1. Alockinginstrumentality fol-locking the cover of a case of a watchmans clock, and mechanism for operating said locking instrumentality contained within said case and inaccessible eXcept when the cover is removed therefrom, said locking instrumentality consisting of a spring-latch susceptible of being set into operative position, and said mechanism consisting of a spring tending to retract said spring-latch from its operative position; a scar for holding said springlatch in its operative position against the influence of said spring, and a tripper connected with and actuated by the clock-movement for tripping said scar at a predetermined hour, and thereby releasing said spring-latch to thc iniiuence of its retracting-spring, as and for the purpose set forth.

2. Alockinginstrumentalityforlockingthe cover of a case of a watchmans clock, and mechanism for operatin g said locking instrumentality contained within said case and inaccessible except when the cover is removed therefrom, said locking instrumentality consisting ot a spring-latch susceptible of being set into operative position, and said mechanism consisting of a spring tending to retract said springdatch from its operative position; a scar for holding said spring-latch in its operative position against the influence of said spring 5 a tripper connected with and rotated once in every tw enty-four hours by the clockmovement; connections between said tripper and said scar for effecting the tripping of said sear and thereby the release of said spring latch to the influence of its retracting-spring concurrently with the movement of said tripper through a prescribed part of its path of revolution at the end of a predetermined period of time after the clock has been wound, the spring set in its operative position and the cover applied to and locked upon the case.

3. In a watchmans clock employing an eight-day-clock movementfcontained :in a case provided with a removable cover and with means for locking said cover, consisting of a locking instrumentality contained within said case and inaccessible except when the cover is removed therefrom; a spring tend ing to retract said locking instrumentality from its operative position, a sear for holding said. locking instrumentality in its operative position against the iniiuence of its retracting-spring, an endwise-movable arm having IOO IIO

formed upon one of its edges a series of ratchet-teeth and oarryin g a pin for tripping said sear, a detent adapted to engage said ratchet-teeth successively, a-spring tending 5 constantly to move said arm in such direction as to cause its teeth to engage said detent and to carry said pin toward said sear, a pawl for momentarily swaying said arm sidewise and thus moving the engaged tooth of drasaid arm clear of said detent and permitting the said arm under the inluenoe of its retraeting-spring to be moved bodily until arrested by the engagement with said detent of its next following tooth, a tripper connected 15 with and rotated once in every twenty-four hours by the said clock-movement, a rocking 

